CHM 2045 Chapter Notes - Chapter 8: Ion, Negative Number, Nonmetal
8 Apr 2018
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The size of transition elements as you go across a period generally stay the same because the increasing zeff is counteracted by shielding electrons. Electron affinity: does not include noble gases or group 2a: the ea1 for n > 0, the ea1 for cl is higher than f (cl > f) Is the amount of energy needed to remove an electron from a neutral gaseous atom. Na (g) na+ (g) + e- Since an atom is not limited to only one removal of electrons, several electrons are removed requiring several ionization energies. Ie values greatly increase when removing in inner(core) electron. Acidity and basicity of oxides (bonded to oxygen) A nonmetal oxide bonds covalently (nm + o): they make acidic compounds in water, acidity increases and. A metallic oxide bonds ionic: they make basic compounds in water, basicity increases and.
